blob: 700aef85967dca5fc95b647b73dde3bea327fecc (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Copyright 2009 Phil Burk, Mobileer Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jsyn.ports;
import com.jsyn.unitgen.UnitGenerator;
import com.softsynth.shared.time.ScheduledCommand;
import com.softsynth.shared.time.TimeStamp;
public class UnitGatePort extends UnitInputPort {
private boolean autoDisableEnabled = false;
private boolean triggered = false;
private boolean off = true;
private UnitGenerator gatedUnit;
public static final double THRESHOLD = 0.01;
public UnitGatePort(String name) {
super(name);
}
public void on() {
setOn(true);
}
public void off() {
setOn(false);
}
public void off(TimeStamp timeStamp) {
setOn(false, timeStamp);
}
public void on(TimeStamp timeStamp) {
setOn(true, timeStamp);
}
private void setOn(final boolean on) {
queueCommand(new ScheduledCommand() {
@Override
public void run() {
setOnInternal(on);
}
});
}
private void setOn(final boolean on, TimeStamp timeStamp) {
scheduleCommand(timeStamp, new ScheduledCommand() {
@Override
public void run() {
setOnInternal(on);
}
});
}
private void setOnInternal(boolean on) {
if (on) {
triggerInternal();
}
setValueInternal(on ? 1.0 : 0.0);
}
private void triggerInternal() {
getGatedUnit().setEnabled(true);
triggered = true;
}
public void trigger() {
queueCommand(new ScheduledCommand() {
@Override
public void run() {
triggerInternal();
}
});
}
public void trigger(TimeStamp timeStamp) {
scheduleCommand(timeStamp, new ScheduledCommand() {
@Override
public void run() {
triggerInternal();
}
});
}
/**
* This is called by UnitGenerators. It sets the off value that can be tested using isOff().
*
* @param i
* @return true if triggered by a positive edge.
*/
public boolean checkGate(int i) {
double[] inputs = getValues();
boolean result = triggered;
triggered = false;
if (off) {
if (inputs[i] >= THRESHOLD) {
result = true;
off = false;
}
} else {
if (inputs[i] < THRESHOLD) {
off = true;
}
}
return result;
}
public boolean isOff() {
return off;
}
public boolean isAutoDisableEnabled() {
return autoDisableEnabled;
}
/**
* Request the containing UnitGenerator be disabled when checkAutoDisabled() is called. This can
* be used to reduce CPU load.
*
* @param autoDisableEnabled
*/
public void setAutoDisableEnabled(boolean autoDisableEnabled) {
this.autoDisableEnabled = autoDisableEnabled;
}
/**
* Called by UnitGenerator when an envelope reaches the end of its contour.
*/
public void checkAutoDisable() {
if (autoDisableEnabled) {
getGatedUnit().setEnabled(false);
}
}
private UnitGenerator getGatedUnit() {
return (gatedUnit == null) ? getUnitGenerator() : gatedUnit;
}
public void setupAutoDisable(UnitGenerator unit) {
gatedUnit = unit;
setAutoDisableEnabled(true);
// Start off disabled so we don't immediately swamp the CPU.
gatedUnit.setEnabled(false);
}
}
|
